Yao Xing

Yao Xing (Chinese: 姚興; 366–416), courtesy name Zilüe (子略), also known by his posthumous name as the Emperor Wenhuan of Later Qin (後秦文桓帝), was an emperor of the Qiang-led Chinese Later Qin dynasty. He was the son of the founding emperor Yao Chang (Emperor Wuzhao). For most of his reign, he did not use the title of emperor, but used the title Heavenly King (Tian Wang). During his reign, he destroyed the rival Former Qin and proceeded to expand his hegemony over nearly all of western China, as he temporarily seized all of Western Qin's territory and forced Southern Liang, Northern Liang, Western Liáng, and Qiao Zong's Western Shu (西蜀) all to at least nominally submit to him. However, late in his reign, defeats on the battlefield, particularly at the hands of the rebel general Helian Bobo (who founded the Helian Xia), and internecine struggles between his sons and nephews greatly damaged the Later Qin state, and it was destroyed soon after his death.

A passionate follower of Buddhism, Yao Xing heavily promoted the religion among his subjects. He was a prominent figure in the spread of the religion in China, as he sponsored the monk, Kumārajīva to translate many Buddhist texts from Sanskrit to Chinese.

Yao Xing was born in 366, when his father Yao Chang was a general under the Former Qin emperor Fu Jiān. Who his mother was is open to interpretation; Yao Chang's wife, the later Empress She, was mentioned as his mother, but when Yao Xing later became emperor, he posthumously honored one of Yao Chang's concubines, Consort Sun, as empress dowager, which allows an inference that he could have been born of Consort Sun but raised by Empress She, but there is no conclusive evidence. Not much is known about his life under Former Qin rule, other than that when he grew older, he served as an assistant to Fu Jiān's crown prince Fu Hong (苻宏).

When Yao Chang declared a rebellion and established Later Qin in 384, Yao Xing was at the Former Qin capital Chang'an, and he immediately fled to his father. For the next several years, as Yao Chang fought with Former Qin and Western Yan, Yao Xing was often entrusted with guarding the base of operations (initially Beidi (北地, in modern Tongchuan, Shaanxi), later Chang'an after Western Yan captured and then abandoned it), while his father engaged in campaigns. In 386, after Yao Chang declared himself emperor, he created Yao Xing crown prince. He was considered to be firm and gracious, and he spent much time studying literature despite the work necessary in maintaining home base. In 392, while Yao Chang was away on a campaign, Yao Xing, at the suggestion of the general Yao Fangcheng (姚方成), executed a number of Former Qin generals whom Yao Chang had taken captive earlier. While Yao Chang was angry on the surface, he appeared to be secretly happy that Yao Xing realized the danger that these generals posed. In 393, when the Former Qin emperor Fu Deng attacked the Later Qin vassal Dou Chong, Yao Chang, at the suggestion of the prime minister Yin Wei, sent Yao Xing against Fu Deng, in order to establish Yao Xing's authority over the troops. Yao Xing was able to stop Fu Deng's attack on Dou fairly easily.

Around the new year 393, Yao Chang fell seriously ill. He told Yao Xing, on his death bed, to trust the several officials that he entrusted his administration with—Yin, Yao Huang (姚晃), Yao Damu (姚大目), and Di Bozhi (狄伯支). When Yao Huang asked Yao Chang for strategies to defeat Fu Deng, Yao Chang refused to answer, merely stating that he trusted that Yao Xing would be able to accomplish it. He soon died, and Yao Xing succeeded him, although initially not keeping Yao Chang's death a secret and entrusting the troops to his uncles Yao Xu (姚緒) and Yao Shuode (姚碩德) and his brother Yao Chóng (姚崇), while preparing a campaign against Former Qin.

Despite Yao Xing's hopes of keeping his father's death a secret, Fu Deng received news of it anyway—and immediately prepared a major attack against Later Qin. Fu Deng had his brother Fu Guang (苻廣) defend the base of Yongcheng (雍城, in modern Baoji, Shaanxi) and Fu Chong defend the base of Hu Kong Castle (胡空堡, in modern Xianyang, Shaanxi), and, in his anxiety, did not make sure that his army had sufficient water supply. Yao Xing set up his army at Mawei (馬嵬, in modern Xianyang, Shaanxi) to prevent Former Qin forces from reaching the river near Mawei, and Former Qin forces were stricken by thirst, but still fought harder. Yao Xing initially ordered Yin to be cautious, but Yin, realizing the trouble the Former Qin forces were already in and believing that morale would be destroyed if he undertook a cautious strategy, fought back fervently, and the Former Qin forces collapsed. Upon hearing the defeat, Fu Deng's brother Fu Guang (苻廣) and son Fu Chong abandoned the two bases that they were holding, and Fu Deng was unable to recapture them. He then sought help from the King of Western Qin, Qifu Gangui, who sent a relief force headed by Qifu Yizhou (乞伏益州). As Fu Deng sought to join up with Qifu Yizhou, Yao Xing ambushed and captured him, and then executed him. He disbanded Fu Deng's troops and gave Fu Deng's Empress Li to Yao Huang. Fu Deng's crown prince Fu Chong would assume imperial title and attempt to resist Later Qin a few months longer, but later in the year died in battle against Western Qin after Qifu Gangui turned against him, ending Former Qin. Later Qin assumed nearly all of Former Qin's remaining territory. Around the new year 395, Later Qin established peace with Later Yan, thus obviating likelihood of war on the eastern border—although later in 395, when Later Yan's crown prince Murong Bao carried out a disastrous campaign against Northern Wei's King Tuoba Gui, Later Qin sent a relief force to aid Northern Wei, although Later Qin forces did not actually engage Later Yan. Further, in 397, with Later Yan under heavy attack by Northern Wei after its founding emperor Murong Chui died and was replaced by Murong Bao, Later Qin refused to provide aid to Later Yan.

Later in 397, Empress Dowager She died. Yao Xing was described to be in such great mourning that he was unable to handle matters of state for some time. After that had passed, however, he continued to wear mourning clothes.

Overall, during this period, Yao Xing was described by historians as diligent and willing to listen to different opinions, ruling the empire efficiently. He engaged in a number of campaigns on the various borders, enlarging Later Qin's territories and influence.